Your patient has poor upper quarter posture,and you are training the scapular depressors in order to improve thoracic and scapular positions.Against low resistance,these muscles are holding for 60 seconds.What muscle fibers primarily are recruited during this activity?
A) Type I
B) Type IB
C) Type IIA
D) Type IIB

Question

Quizplus · Accepted Answer

Type I muscle fibers, also known as slow-twitch fibers, are recruited during low-resistance, endurance-based activities such as holding a contraction for 60 seconds. These fibers have a high capacity for aerobic metabolism and are resistant to fatigue, making them ideal for sustained contractions.

Your Patient Has Poor Upper Quarter Posture,and You Are Training